Create fewer unnecessary lists

pkg/analyzer/lib/src/generated/html.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.html;
 
 import 'dart:collection';
 import 'java_core.dart';
 import 'java_engine.dart';
 import 'source.dart';
 import 'error.dart' show AnalysisErrorListener;
 import 'scanner.dart' as sc show Scanner, SubSequenceReader, Token;
 import 'parser.dart' show Parser;
 import 'ast.dart';
 import 'element.dart';
 import 'engine.dart' show AnalysisEngine, AngularHtmlUnitResolver, ExpressionVisitor;
 
 /**
  * The abstract class `AbstractScanner` implements a scanner for HTML code. Subclasses are
  * required to implement the interface used to access the characters being scanned.
  */
 abstract class AbstractScanner {
-  static List<String> _NO_PASS_THROUGH_ELEMENTS = <String> [];
+  static List<String> _NO_PASS_THROUGH_ELEMENTS = <String>[];
 
   /**
    * The source being scanned.
    */
   final Source source;
 
   /**
    * The token pointing to the head of the linked list of tokens.
    */
   Token _tokens;
@@ skipping 1152 matching lines @@
 class XmlAttributeNode extends XmlNode {
   final Token _name;
 
   final Token equals;
 
   final Token _value;
 
   List<XmlExpression> expressions = XmlExpression.EMPTY_ARRAY;
 
   /**
+   * An empty list of XML attribute nodes.
+   */
+  static const List<XmlAttributeNode> EMPTY_LIST = const <XmlAttributeNode>[];
+
+  /**
    * Construct a new instance representing an XML attribute.
    *
    * @param name the name token (not `null`). This may be a zero length token if the attribute
    *          is badly formed.
    * @param equals the equals sign or `null` if none
    * @param value the value token (not `null`)
    */
   XmlAttributeNode(this._name, this.equals, this._value);
 
   @override
@@ skipping 835 matching lines @@
  */
 abstract class XmlVisitor<R> {
   R visitHtmlScriptTagNode(HtmlScriptTagNode node);
 
   R visitHtmlUnit(HtmlUnit htmlUnit);
 
   R visitXmlAttributeNode(XmlAttributeNode xmlAttributeNode);
 
   R visitXmlTagNode(XmlTagNode xmlTagNode);
 }